CN114383411B - Heat pump drying control method, device and system and storage medium - Google Patents
Heat pump drying control method, device and system and storage medium Download PDFInfo
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- CN114383411B CN114383411B CN202111476454.2A CN202111476454A CN114383411B CN 114383411 B CN114383411 B CN 114383411B CN 202111476454 A CN202111476454 A CN 202111476454A CN 114383411 B CN114383411 B CN 114383411B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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Abstract
The application discloses a heat pump drying control method, device and system and a storage medium, and relates to the technical field of drying. The heat pump drying control method comprises the following steps: acquiring heating power; according to the heating power, configuring output power of an electric heater, a fixed-frequency heat pump compression system and a variable-frequency heat pump compression system; acquiring the heating rate in real time; and controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and a first heating preset value. The heat pump drying control method can perform fine drying operation on the dried objects, and effectively improves the processing quality of the dried objects.
Description
Technical Field
The present application relates to the field of drying technologies, and in particular, to a heat pump drying control method, apparatus, system, and storage medium.
Background
In the related technology, the existing agricultural and sideline products are various, the living diet requirements of people are greatly met, along with the development of economy, the living standard of people is gradually improved, and the quality requirements on the agricultural and sideline products are also gradually improved. Some agricultural and sideline products, in order to be able to preserve for a long time and guarantee the quality, often need to carry out the stoving operation, for example prickly ash, after picking prickly ash, need to dry prickly ash and just can preserve for a long time. At present, drying equipment is usually adopted to dry the peppers, but the peppers are sensitive to the heating temperature during drying, and when the temperature is not controlled properly, the quality of the peppers is easy to reduce. When the existing drying method is used for drying the peppers, the segmented baking mode is usually adopted for drying, the operation process is often rough, more fine control is not performed, the quality of the peppers is easily reduced during drying, and the high-quality requirement of people on agricultural and sideline products cannot be met.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a heat pump drying control method, device, system and storage medium, which can perform fine drying operation on the dried object and effectively improve the processing quality of the dried object.
According to the embodiment of the first aspect of the application, the heat pump drying control method comprises the following steps:
acquiring heating power;
according to the heating power, configuring the output power of an electric heater, a fixed-frequency heat pump compression system and a variable-frequency heat pump compression system;
acquiring the heating rate in real time;
and controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and a first heating preset value.
According to some embodiments of the application, the obtaining heating power comprises:
and calculating according to the area of the drying area and the volume of the dried object to obtain heating power.
According to some embodiments of the application, the configuring of the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system according to the heating power comprises:
when the heating power is below a first power preset value, configuring a variable-frequency heat pump compressor in the variable-frequency heat pump compression system and taking the variable-frequency heat pump compressor as output power;
when the heating power is larger than the first power preset value and is lower than a second power preset value, configuring the variable frequency heat pump compressor and a fixed frequency heat pump compressor in the fixed frequency heat pump compression system and taking the configured variable frequency heat pump compressor and the fixed frequency heat pump compressor as output power;
and when the heating power is greater than the second power preset value, configuring the variable-frequency heat pump compressor, the fixed-frequency heat pump compressor and the electric heater and taking the configured variable-frequency heat pump compressor, the fixed-frequency heat pump compressor and the electric heater as output power.
According to some embodiments of the application, the obtaining of the temperature rise rate in real time includes:
acquiring the temperature of the drying area in real time;
and calculating the heating rate according to the temperature.
According to some embodiments of the present application, the controlling the electric heater, the fixed-frequency heat pump compression system, and the variable-frequency heat pump compression system to change the output power according to the temperature-rising rate and a first temperature-rising preset value includes:
and when the electric heater, the variable-frequency heat pump compressor and the fixed-frequency heat pump compressor are all in an open state, and the temperature rise rate is greater than a first temperature rise preset value, closing the variable-frequency heat pump compressor.
According to some embodiments of the present application, the controlling the electric heater, the fixed-frequency heat pump compression system, and the variable-frequency heat pump compression system to change the output power according to the temperature-rising rate and a first temperature-rising preset value further includes:
and when the temperature rising rate is larger than a second temperature rising preset value, closing the variable-frequency heat pump compressor and the fixed-frequency heat pump compressor.
According to some embodiments of the present application, the heat pump drying control method further comprises:
and when the temperature rising rate is smaller than a third temperature rising preset value, starting the closed variable frequency heat pump compressor and the closed fixed frequency heat pump compressor.
According to 8 of the second aspect embodiment of this application heat pump stoving controlling means includes:
the power acquisition module is used for acquiring heating power;
the power configuration module is used for configuring the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system according to the heating power;
the temperature acquisition module is used for acquiring the heating rate in real time;
and the control module is used for controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and a first heating preset value.
According to the third aspect embodiment of this application, the heat pump drying control system includes:
at least one memory;
at least one processor;
at least one program;
the programs are stored in the memory, and the processor executes at least one of the programs to implement the heat pump drying control method according to the embodiment of the first aspect.
According to a fourth aspect embodiment of the present application, there is provided a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the heat pump drying control method according to the first aspect embodiment.
According to the heat pump drying control method provided by the embodiment of the application, at least the following beneficial effects are achieved: firstly, when the object to be dried needs to be dried, the configuration of the output power of an electric heater, a fixed-frequency heat pump compression system and a variable-frequency heat pump compression system is carried out by acquiring the heating power and according to the heating power; then, heating and simultaneously acquiring the heating rate in real time; and finally, when the heating rate is greater than the first heating preset value, controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and the first heating preset value. Through obtaining the rate of rise in temperature in real time, can learn the change of temperature fast slowly, and then carry out accurate control to output according to the change condition of temperature, the temperature of the thing of being dried when drying by the assurance that can be fine can carry out more meticulous regulation to make by the thing of drying when being dried, guarantee the quality of being dried. Therefore, the heat pump drying control method can perform fine drying operation on the dried object, and effectively improves the processing quality of the dried object.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic flow chart of a heat pump drying control method according to an embodiment of the present application;
fig. 2 is a schematic connection diagram of a heat pump drying control device according to an embodiment of the present application;
fig. 3 is a connection schematic diagram of a heat pump drying control system according to an embodiment of the present application.
Reference numerals are as follows:
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It should be noted that although functional block divisions are provided in the system drawings and logical orders are shown in the flowcharts, in some cases, the steps shown and described may be performed in different orders than the block divisions in the systems or in the flowcharts. The terms etc. in the description and claims and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present application, unless otherwise specifically limited, terms such as set, installed, connected and the like should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
A heat pump drying control method according to an embodiment of the present application is described below with reference to fig. 1.
It can be appreciated that, as shown in fig. 1, there is provided a heat pump drying control method including:
and step S100, acquiring heating power.
The heating power is a power required for heating the object to be dried.
And step S110, configuring output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system according to the heating power.
It should be noted that the fixed-frequency heat pump compression system is a system including a fixed-frequency heat pump compressor; the fixed-frequency heat pump compressor refers to a compressor with fixed output frequency, and the fixed-frequency heat pump compressor can be understood as a fixed-output power compressor due to the fixed frequency. The variable frequency heat pump compression system is a system comprising a variable frequency heat pump compressor; the variable frequency heat pump compressor refers to a compressor with adjustable output frequency, and the variable frequency heat pump compressor can be understood as a compressor with adjustable output power due to adjustable frequency.
And step S120, acquiring the heating rate in real time.
The temperature of the object to be dried is gradually increased after the object is heated according to the output power, and the rate of temperature increase refers to the rate of temperature change per hour when the temperature is increased.
And S130, controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and the first heating preset value.
The first preset temperature rise value is set according to the requirement of the dried object on the temperature rise rate; specifically, reference is generally made to the initial temperature, the operating temperature to be reached, and other factors that affect the rate of temperature rise.
It is understood that the heating power is obtained, including:
and calculating according to the area of the drying area and the volume of the dried object to obtain heating power.
It can be understood that, according to the heating power, the configuration of the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system comprises the following steps:
when the heating power is lower than a first power preset value, configuring a variable frequency heat pump compressor in the variable frequency heat pump compression system and taking the variable frequency heat pump compressor as output power;
when the heating power is greater than a first power preset value and is lower than a second power preset value, configuring a variable frequency heat pump compressor and a fixed frequency heat pump compressor in a fixed frequency heat pump compression system and taking the configured variable frequency heat pump compressor and the fixed frequency heat pump compressor as output power;
and when the heating power is greater than a second power preset value, configuring the variable-frequency heat pump compressor, the fixed-frequency heat pump compressor and the electric heater and taking the configured variable-frequency heat pump compressor, the fixed-frequency heat pump compressor and the electric heater as output power.
It should be noted that the first power preset value and the second power preset value are set according to the power of the fixed-frequency heat pump compressor, the variable-frequency heat pump compressor and the electric heater. For example, 2 electric heaters of 12 kilowatts, 3 fixed-frequency heat pump compressors of 21 kilowatts and 1 variable-frequency heat pump compressor of 25 kilowatts are adopted to configure the output power, and the operating frequency of the variable-frequency heat pump compressor is 30 Hz to 90 Hz, so that the output power of 0 to 112 kilowatts can be adjusted through the configuration. Specifically, the first power preset value is set as the maximum output power of the variable frequency heat pump compressor, namely 25 kilowatts; the second power preset value is set as the sum of the output power of the fixed-frequency heat pump compressor and the maximum output power of the variable-frequency heat pump compressor, namely 3 × 21+25=88 kilowatts.
It should be noted that, when 10 kw of heating power is to be realized, since the operating frequency of the inverter heat pump compressor is 30 hz to 90 hz, and the maximum power corresponding to 90 hz is 25 kw, that is, the operating frequency of the inverter heat pump compressor can meet the heating power requirement of 10 kw only depending on the output power configuration of the inverter heat pump compressor, and when 10 kw of heating power is calculated:
therefore, according to the above calculation, the control strategy is: and (3) turning off 2 electric heaters, turning off 3 fixed-frequency heat pump compressors, turning on the variable-frequency heat pump compressor, and controlling the working frequency of the variable-frequency heat pump compressor to be 34.16 Hz.
It should be noted that when the heating power of 100 kw is to be realized, it can be known that 2 electric heaters of 12 kw, 3 fixed-frequency heat pump compressors of 21 kw, and 1 variable-frequency heat pump compressor of 25 kw are all turned on according to the configurations of the 2 electric heaters, the 3 fixed-frequency heat pump compressors, and the 1 variable-frequency heat pump compressor; it can be understood that when the power of the inverter heat pump compressor does not meet the requirement of the heating power, the fixed-frequency heat pump compressor is started again, and then the electric heater is started if the requirement of the heating power is not met. When 2 electric heaters, 3 fixed-frequency heat pump compressors and 1 variable-frequency heat pump compressor are all started, the operating frequency of the variable-frequency heat pump compressor can be adjusted to meet the requirement of heating power. That is, when the heating power is 100 kilowatts, the operation frequency of the inverter heat pump compressor is as follows:
therefore, according to the above calculation, the control strategy is: and starting 3 fixed-frequency heat pump compressors, starting 2 electric heaters, starting the variable-frequency heat pump compressor, and controlling the working frequency of the variable-frequency heat pump compressor to be 35.41 Hz.
It should be noted that, when 50 kw of heating power is to be achieved, the inverter heat pump compressor should be started first and the electric heater should be started in sequence because the power of the inverter heat pump compressor is not enough to meet the demand. At this time, since the power of the constant-frequency heat pump compressor is 21 kw, 2 constant-frequency heat pump compressors are considered to be turned on, and the deficiency is supplemented by the inverter heat pump compressor, and the operating frequency of the inverter heat pump compressor is as follows:
therefore, according to the above calculation, the control strategy is: and 2 fixed-frequency heat pump compressors are started, 2 electric heaters are turned off, 1 fixed-frequency heat pump compressor is turned off, the variable-frequency heat pump compressor is started, and the working frequency of the variable-frequency heat pump compressor is controlled to be 33.33 Hz.
It is understood that the temperature rise rate is obtained in real time, including:
acquiring the temperature of a drying area in real time;
the rate of temperature rise is calculated from the temperature.
It should be noted that, by acquiring the temperature of the drying area in real time, the temperature increase rate per hour can be calculated. For example, if the temperature is raised from 30 ℃ to 40 ℃ in 1 hour, the temperature rise rate per hour is 10 ℃/h.
It can be understood that, according to the temperature rising rate and the first temperature rising preset value, the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system are controlled to change the output power, including:
and when the electric heater, the variable-frequency heat pump compressor and the fixed-frequency heat pump compressor are all in an open state and the temperature rise rate is greater than a first temperature rise preset value, closing the variable-frequency heat pump compressor.
It can be understood that, according to the heating rate and the first heating preset value, the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system are controlled to change the output power, and the method further comprises the following steps:
and when the temperature rising rate is larger than the second temperature rising preset value, closing the variable-frequency heat pump compressor and the fixed-frequency heat pump compressor.
It can be understood that the heat pump drying control method further includes:
and when the temperature rising rate is smaller than a third temperature rising preset value, starting the closed variable frequency heat pump compressor and the closed fixed frequency heat pump compressor.
When drying the object to be dried, the temperature-raising rate can be divided into a plurality of stages, for example, the temperature-raising schedule of zanthoxylum is as follows:
according to the table, a first temperature-rise preset value, a second temperature-rise preset value and a third temperature-rise preset value of each stage can be calculated.
It should be noted that the holding time is understood as the time taken to reach the next stage from the previous stage, for example, from 30 ℃ in stage 1 to 35 ℃ in stage 2, which takes 2 hours, and the temperature is raised by 2.5 ℃ per hour, that is, the target temperature raising rate is 2.5 ℃/h.
It should be noted that the first preset temperature rise value = the target temperature rise rate + the temperature change generated after the single constant-frequency heat pump compressor is turned off, that is, in addition to the target temperature rise rate, the first preset temperature rise value refers to the temperature change generated within a unit hour after the one constant-frequency heat pump compressor is turned off, the factory setting is 0.2 ℃/h, and the first preset temperature rise value =2.5 ℃/h +0.2 ℃/h =2.7 ℃/h from 30 ℃ in stage 1 to 35 ℃ in stage 2.
It should be noted that the second preset temperature rise value = the target temperature rise rate + the temperature change generated after the inverter heat pump compressor and the fixed-frequency heat pump compressor are all turned off, and the temperature change generated after the inverter heat pump compressor and the fixed-frequency heat pump compressor are all turned off may be understood as the temperature change generated within a unit hour after all the compressors are turned off, and the factory setting is 0.5 ℃/h, and then the second preset temperature rise value =2.5 ℃/h +0.5 ℃/h =3 ℃/h from 30 ℃ in stage 1 to 35 ℃ in stage 2.
It should be noted that the third preset temperature rise value = target temperature rise rate — temperature change generated after all the variable frequency heat pump compressors and the fixed frequency heat pump compressors are loaded, which can be understood as temperature change generated within unit hour after all the compressors are started, and when the factory is set to be 2 ℃/h, the third preset temperature rise value =2.5 ℃/h-2 ℃/h =0.5 ℃/h from 30 ℃ in the stage 1 to 35 ℃ in the stage 2.
It should be noted that when all the variable frequency heat pump compressors and the fixed frequency heat pump compressors are in an on state, the adjustment can be performed more finely. Specifically, according to the table, in the stage 1 to the stage 9, after all the variable frequency heat pump compressors and the fixed frequency heat pump compressors are in the on state, and 2 electric heaters are not turned on, when the actual temperature rising rate does not reach the target temperature rising rate, 1 electric heater is turned on, and when the actual temperature rising rate does not reach the target temperature rising rate, 1 electric heater is turned on again. After the actual heating rate reaches the target heating rate, if only 1 electric heater is started at present, the current electric heater is closed; if 2 electric heaters are started at present, 1 electric heater is firstly closed, the judgment is continuously carried out for 20 minutes, the actual temperature rising rate still reaches the target temperature rising rate, and then the 1 electric heater is closed.
A heat pump drying control apparatus according to an embodiment of the present application is described below with reference to fig. 2.
As can be understood, as shown in fig. 2, the heat pump drying control device includes:
a power acquisition module 100 for acquiring heating power;
the power configuration module 110 is used for configuring the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system according to the heating power;
a temperature obtaining module 120, configured to obtain a heating rate in real time;
and the control module 130 is used for controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and the first heating preset value.
According to the heat pump drying control method, firstly, when the dried object needs to be dried, the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system is configured by obtaining the heating power and according to the heating power; then, heating and simultaneously acquiring the heating rate in real time; and finally, when the heating rate is greater than the first heating preset value, controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and the first heating preset value. Through obtaining the rate of rise in temperature in real time, can learn the change of temperature fast slowly, and then carry out accurate control to output according to the change condition of temperature, the temperature of the thing of being dried when drying by the assurance that can be fine can carry out more meticulous regulation to make by the thing of drying when being dried, guarantee the quality of being dried. Therefore, the heat pump drying control method can perform fine drying operation on the dried object, and effectively improves the processing quality of the dried object.
A heat pump drying control system according to an embodiment of the present application is described below with reference to fig. 3.
It can be understood that as shown in fig. 3, the heat pump drying control system includes:
at least one memory 200;
at least one processor 300;
at least one program;
a program is stored in the memory 200, and the processor 300 executes at least one program to implement the heat pump drying control method described above. Fig. 3 illustrates an example of a processor 300.
The processor 300 and the memory 200 may be connected by a bus or other means, and fig. 3 illustrates a connection by a bus as an example.
The memory 200, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and signals, such as program instructions/signals corresponding to a heat pump drying control system in the embodiments of the present application. The processor 300 executes various functional applications and data processing by running non-transitory software programs, instructions and signals stored in the memory 200, namely, implements the heat pump drying control method of the above method embodiment.
The memory 200 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data related to the heat pump drying control method, and the like. Further, the memory 200 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 200 may optionally include memory located remotely from processor 300, which may be connected to the risk prediction system of the application via a network. Examples of such networks include, but are not limited to, the internet of things, software defined networks, sensor networks, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more signals are stored in the memory 200, which when executed by the one or more processors 300, perform the heat pump drying control method in any of the method embodiments described above. For example, the above-described method steps S100 to S130 in fig. 1 are performed.
A computer-readable storage medium according to an embodiment of the present application is described below with reference to fig. 3.
As shown in fig. 3, a computer-readable storage medium stores computer-executable instructions that, when executed by one or more processors 300, for example, by one of processors 300 in fig. 3, may cause the one or more processors 300 to execute the heat pump drying control method in the method embodiment. For example, the above-described method steps S100 to S130 in fig. 1 are performed.
The above-described system embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
From the above description of embodiments, those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media and communication media. The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, communication media typically embodies computer readable signals, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (8)
1. The heat pump drying control method is characterized by comprising the following steps:
acquiring heating power;
according to the heating power, configuring output power of an electric heater, a fixed-frequency heat pump compression system and a variable-frequency heat pump compression system;
acquiring the heating rate in real time;
controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and a first heating preset value;
the obtaining of heating power comprises:
calculating according to the area of the drying area and the volume of the dried object to obtain heating power;
the configuration of the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system according to the heating power comprises the following steps:
when the heating power is below a first power preset value, configuring a variable-frequency heat pump compressor in the variable-frequency heat pump compression system and taking the variable-frequency heat pump compressor as output power;
when the heating power is larger than the first power preset value and is lower than a second power preset value, configuring the variable frequency heat pump compressor and a fixed frequency heat pump compressor in the fixed frequency heat pump compression system and taking the configured variable frequency heat pump compressor and the fixed frequency heat pump compressor as output power;
when the heating power is larger than the second power preset value, configuring the variable-frequency heat pump compressor, the fixed-frequency heat pump compressor and the electric heater and taking the configured variable-frequency heat pump compressor, the fixed-frequency heat pump compressor and the electric heater as output power;
and the first power preset value and the second power preset value are set according to the power of the fixed-frequency heat pump compressor, the variable-frequency heat pump compressor and the electric heater.
2. The heat pump drying control method according to claim 1, wherein the obtaining the temperature increase rate in real time includes:
acquiring the temperature of the drying area in real time;
and calculating the heating rate according to the temperature.
3. The heat pump drying control method according to claim 1, wherein the controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the temperature rise rate and a first temperature rise preset value comprises:
and when the electric heater, the variable-frequency heat pump compressor and the fixed-frequency heat pump compressor are all in an open state, and the temperature rise rate is greater than a first temperature rise preset value, closing the variable-frequency heat pump compressor.
4. The heat pump drying control method according to claim 3, wherein the controlling the electric heater, the constant-frequency heat pump compression system, and the variable-frequency heat pump compression system to change the output power according to the temperature-rising rate and a first temperature-rising preset value further comprises:
and when the temperature rising rate is larger than a second temperature rising preset value, closing the variable-frequency heat pump compressor and the fixed-frequency heat pump compressor.
5. The heat pump drying control method according to claim 4, further comprising:
and when the temperature rising rate is smaller than a third temperature rising preset value, starting the closed variable frequency heat pump compressor and the closed fixed frequency heat pump compressor.
6. Heat pump stoving controlling means, its characterized in that includes:
the power acquisition module is used for acquiring heating power;
the power configuration module is used for configuring the output power of the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system according to the heating power;
the temperature acquisition module is used for acquiring the heating rate in real time;
and the control module is used for controlling the electric heater, the fixed-frequency heat pump compression system and the variable-frequency heat pump compression system to change the output power according to the heating rate and a first heating preset value.
7. Heat pump stoving control system, its characterized in that includes:
at least one memory;
at least one processor;
at least one program;
the program is stored in the memory, and the processor executes at least one of the programs to implement the heat pump drying control method according to any one of claims 1 to 5.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions for causing a computer to execute the heat pump drying control method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111476454.2A CN114383411B (en) | 2021-12-06 | 2021-12-06 | Heat pump drying control method, device and system and storage medium |
Applications Claiming Priority (1)
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| CN115342628B (en) * | 2022-07-27 | 2024-03-12 | 广州热之源科技有限公司 | Control system of drying kiln, drying kiln and control method of drying kiln |
| CN115523750A (en) * | 2022-08-09 | 2022-12-27 | 青岛海尔空调器有限总公司 | Heat pump dryer control method and device based on air inlet temperature |
| CN115523748B (en) * | 2022-08-09 | 2023-12-19 | 青岛海尔空调器有限总公司 | Control method and device for heat pump dryer based on return air inlet temperature |
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